CVE-2018-4063

HighCVSS 8.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. A specially crafted HTTP request can upload a file, resulting in executable code being uploaded, and routable, to the webserver. An attacker can make an authenticated HTTP request to trigger this vulnerability.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-434

Affected software

Vendor	Product	Versions
n/a	Sierra Wireless	Sierra Wireless AirLink ES450 FW 4.9.3

References

http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.htmlExploit, VDB Entry
http://www.securityfocus.com/bid/108147Broken Link
https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03Third Party Advisory, US Government Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748Exploit, Third Party Advisory
http://packetstormsecurity.com/files/152648/Sierra-Wireless-AirLink-ES450-ACEManager-upload.cgi-Remote-Code-Execution.htmlExploit, VDB Entry
http://www.securityfocus.com/bid/108147Broken Link
https://ics-cert.us-cert.gov/advisories/ICSA-19-122-03Third Party Advisory, US Government Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0748Exploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-4063US Government Resource
https://www.forescout.com/blog/ot-network-security-threats-industrial-routers-under-attack/Exploit, Third Party Advisory

Timeline

Published: May 6, 2019
Last modified: Jun 17, 2026
Added to CISA KEV: Dec 12, 2025
NVD status: Analyzed

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